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Finding the Fourth Proportional to 60.74, 83.78 and 46.95

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Solution

The fourth proportional to 60.74, 83.78 and 46.95 is: 64.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.74 : 83.78 = 46.95 : x
  2. Step 2: Convert to fraction form
    60.74/83.78 = 46.95/x
  3. Step 3: Cross multiply
    60.74x = 83.78 × 46.95
  4. Step 4: Simplify right side
    60.74x = 3,933.24
  5. Step 5: Solve for x
    x = 3,933.24/60.74
  6. Step 6: Final answer
    x = 64.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.